TWI745947B - Fastening device - Google Patents

Abstract

The present disclosure provides a fastening device including a case unit and a spool. The case unit includes a side wall, an upper opening and a lower opening. The side wall is closed to form a receiving space. The upper opening is communicated with the receiving space. The lower opening opposite to the upper opening is communicated with the receiving space. The spool is within the receiving space. The spool is restricted by the side wall and the side wall prohibits the spool from leaving the receiving space from the upper opening. Therefore, the spool is allowed to be put into the case unit from a lower side of the case unit, and the spool is not allowed to leave from the case unit from the upper opening. The installation is simplified, and the structure stability of the fastening device can be increased.

Description

Fastening device

The present invention relates to a fastening device, and in particular to a fastening device capable of retracting and unwinding a tether.

In daily life, cords and ties are often used to condense items. The most common constriction method is to use the cord to shuttle back and forth through the holes in the items, and then fasten them with knots, such as tying ropes and shoes. However, this kind of binding method is prone to loosening of the knot due to external forces. Not only must the knot be re-tied, but it also brings a lot of inconvenience due to the inability to securely bundle the article.

In order to solve such problems, some companies have developed a simple wire harness mechanism, which includes a housing, a detent unit and a spring. The housing has a hole for the wire to pass through. The force causes the wire body to be clamped between the detent unit and the housing to achieve a fastening effect. The wire body can be pulled to change the length of the wire body by changing the position of the detent unit by pressing the spring. However, this kind of wire harness mechanism provides the tightening force through the return force of the spring, and it is still easy to loose the wire body due to vibration or external force factors, and this kind of wire harness mechanism has no space to accommodate the wire body, so the wire body is exposed. It is also easy to cause danger.

Therefore, another industry has developed another type of buckle that can be rotatably constricted and fixed. The thread body can be accommodated inside the buckle and pass through The interference of mechanical force allows the length of the line body to be adjusted while adjusting the tightness of the bundle. However, the structure of this kind of buckle is complicated, which increases the manufacturing cost and also has the problem of difficulty in assembly and maintenance.

Therefore, manufacturers continue to adjust and improve the internal structure of the buckle, hoping to maintain the fastening ability of the buckle and increase the structural stability under the premise of simplifying the structure.

In view of this, how to effectively improve the structure of fasteners and other fastening devices has become the goal of relevant industry efforts.

The invention provides a fastening device, which can prevent the wire reel from being separated from the housing unit from the upper opening through the structural configuration.

According to an embodiment of the present invention, a fastening device is provided, which includes a housing unit and a wire reel. The housing unit includes a side wall, an upper opening and a lower opening. The side wall surrounds to form an accommodation space, and the upper opening communicates with In the accommodating space, the lower opening is opposite to the upper opening and communicates with the accommodating space, and the wire reel is located in the accommodating space. Wherein, the wire reel is restricted by the side wall, and the side wall prevents the wire reel from leaving the accommodating space from the upper opening.

Thereby, the wire reel can be inserted into the housing unit from bottom to top, and the separation of the wire reel from the upper opening of the housing unit can be avoided, which can facilitate easy assembly and increase the structural stability of the fastening device .

According to the plurality of embodiments of the aforementioned fastening device, the side wall may include a plurality of protruding teeth, which protrude toward the accommodating space, and the lower edge of the protruding teeth prevents the wire reel from leaving the accommodating space from the upper opening. Alternatively, the side wall may include an inner ring recess The groove, the inner ring groove includes a ring top surface, the wire reel includes a lower ring portion, and the lower ring portion is correspondingly accommodated in the inner ring groove, and the ring top surface prevents the wire reel from leaving the accommodating space from the upper opening, and the side walls may include a plurality of The convex teeth face the accommodating space.

According to the aforementioned plural embodiments of the fastening device, it may further include a knob and a detent unit, the knob cover is arranged on the housing unit, the detent unit is located in the accommodating space and is coupled to the knob, the detent unit includes a first driving part ; Wherein, the wire reel includes a second drive portion corresponding to the first drive portion, the knob drives the detent unit along an axial direction to switch between a first position and a second position, when the knob is in the first position, the first drive Part is coupled to the second driving part, the detent unit corresponds to the convex tooth and engages with at least one convex tooth to prevent the wire reel from rotating in a first direction, and the knob is rotated in a second direction opposite to the first direction to depress The unit is separated from the at least one convex tooth and does not prevent the wire reel from rotating in the second direction; when the knob is in the second position, the detent unit does not prevent the wire reel from rotating in the first direction.

According to the plurality of embodiments of the aforementioned fastening device, it may further include at least one engaging pawl protruding downward, the aforementioned at least one engaging pawl is disposed on a main body of the detent unit or an inner top surface of the knob, and the wire reel includes a When the knob is at the first position, the at least one engaging pawl is coupled to the engaging part, and when the knob is at the second position, the at least one engaging pawl is separated from the engaging part. In addition, the aforementioned fastening device may further include two protruding arms and two limiting protrusions. The two protruding arms are symmetrically arranged on a main body or an inner top surface of the knob of the detent unit, and the two protruding arms respectively protrude downward, and each limit The position protrusion is located at a distal end of each protrusion arm. The wire reel further includes a middle through hole for the two protrusion arms and two limit protrusions to pass through. When the knob is switched between the first position and the second position, The two convex arms are displaced relative to the middle through hole in the axial direction, and the two limiting protrusions are restricted by the middle through hole.

Another embodiment according to an aspect of the present invention provides a fastening device, which includes a housing unit, a wire reel, a knob, and a detent unit. The housing unit includes a side wall, an upper opening and a lower opening, and the side wall surrounds An accommodating space is formed, the upper opening communicates with the accommodating space, the lower opening is opposite to the upper opening and communicates with the accommodating space, and the wire reel is located in the accommodating space. The knob cover is arranged on the housing unit, the detent unit is located in the accommodating space and above the wire reel, and the detent unit is coupled to the knob. Wherein, the spool is limited by the side wall, and the side wall blocks the spool from being separated from the accommodating space from the upper opening. The relative position is fixed.

According to the plurality of embodiments of the aforementioned fastening device, the side wall may include a plurality of protruding teeth, which protrude toward the accommodating space, and the lower edge of the protruding teeth prevents the wire reel from leaving the accommodating space from the upper opening. Alternatively, the side wall may include an inner ring groove, the inner ring groove includes a ring top surface, the wire reel includes a lower ring portion, the lower ring portion is correspondingly accommodated in the inner ring groove, and the ring top surface prevents the wire reel from escaping from the upper opening Housing space.

According to the plurality of embodiments of the aforementioned fastening device, it further includes at least one engaging pawl protruding downward, the aforementioned at least one engaging pawl is disposed on a main body of the detent unit or an inner top surface of the knob, and the wire reel includes a card When the knob is at the first position, the at least one engaging pawl is coupled to the engaging part, and when the knob is at the second position, the at least one engaging pawl is separated from the engaging part. In addition, the aforementioned fastening device may further include two protruding arms and two limiting protrusions. The two protruding arms are symmetrically arranged on a main body or an inner top surface of the knob of the detent unit, and the two protruding arms respectively protrude downward, and each limit The position protrusion is located at a distal end of each protruding arm. The wire reel further includes a middle through hole for the two protruding arms and the two limiting protrusions to pass through. When the position is switched, the two convex arms are displaced relative to the middle through hole in the axial direction, and the two limit protrusions are restricted by the middle through hole.

100: Fastening device

200: housing unit

210: Chassis

220: sidewall

221: Convex Teeth

2211: bottom edge

222: Outer ring concave

230: accommodating space

240: upper opening

250: lower opening

260: Wire Hole

300: wire reel

310: The second drive part

320: card joint

220b: side wall

270b: Inner ring groove

271b: ring top surface

300b: wire reel

340b: Lower ring

350b: Middle through hole

400b: Detent unit

460b: Center hole

500b: knob

501b: inner top surface

540b: convex arm

550b: Limit convex

100c: Fastening device

220c: side wall

330: Sheung Wan

340: Lower Ring

400: Control unit

410: Subject

420: Combination Arm

430: thorny arm

440: First Drive

450: engagement claw

500: knob

510: card slot

520: Inner Wall

530: Flange

100a: Fastening device

300a: wire reel

350a: Middle through hole

400a: detent unit

410a: main body

440a: convex arm

450a: Limit convex

500a: knob

100b: Fastening device

270c: Inner ring groove

100d: Fastening device

220d: side wall

221d: convex tooth

223d: upper ring groove

300d: wire reel

310d: The second drive part

400d: detent unit

430d: spine

440d: The first drive part

500d: knob

100e: Fastening device

300e: wire reel

320e: Snap part

400e: detent unit

500e: knob

560e: engagement claw

I1: Axial

R1: first direction

R2: second direction

Fig. 1 is a perspective schematic diagram of a fastening device according to a first embodiment of the present invention; Fig. 2 is an exploded schematic diagram of the fastening device of Fig. 1; Fig. 3 shows the fastening of Fig. 1 Another exploded schematic view of the device; Fig. 4 shows a schematic cross-sectional view of the fastening device of Fig. 1; Fig. 5 shows another schematic cross-sectional view of the fastening device of Fig. 1; Fig. 6 shows a schematic diagram according to the present invention An exploded schematic view of a fastening device of the second embodiment; Fig. 7 shows another exploded schematic view of the fastening device of Fig. 6; Fig. 8 shows a schematic cross-sectional view of the fastening device of Fig. 6; Fig. 9 shows another schematic cross-sectional view of the fastening device in Fig. 6; Fig. 10 shows an exploded schematic view of a fastening device according to a third embodiment of the present invention; Fig. 11 shows the one of Fig. 10 Another exploded schematic view of the fastening device; Figure 12 shows a schematic cross-sectional view of the fastening device of Figure 10; Figure 13 shows another schematic cross-sectional view of the fastening device of Figure 10; Figure 14 shows the following An exploded schematic view of a fastening device according to a fourth embodiment of the present invention; Figure 15 shows another exploded schematic view of the fastening device of Figure 14; Fig. 16 shows a schematic cross-sectional view of the fastening device of Fig. 14; Fig. 17 shows another schematic cross-sectional view of the fastening device of Fig. 14; Fig. 18 shows a fifth embodiment according to the present invention An exploded schematic view of the fastening device; Figure 19 shows another exploded schematic view of the fastening device in Figure 18; Figure 20 shows a cross-sectional schematic view of the fastening device in Figure 18; Figure 21 shows the 18th Fig. 22 shows another schematic cross-sectional view of the fastening device; Fig. 22 shows an exploded schematic view of a fastening device according to a sixth embodiment of the present invention; Fig. 23 shows another exploded view of the fastening device of Fig. 22 Schematic diagram; Figure 24 shows a schematic cross-sectional view of the fastening device of Figure 22; and Figure 25 shows another cross-sectional schematic view of the fastening device of Figure 22.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. For the sake of clarity, many practical details will be explained in the following description. However, the reader should understand that these practical details should not be used to limit the present invention. That is to say, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplification of the drawings, some conventionally used structures and elements will be drawn in a simple schematic manner in the drawings; and repeated elements may be represented by the same or similar numbers.

In addition, when a component (or mechanism or module, etc.) is “connected”, “configured” or “coupled” to another component in this document, it can mean that the component is directly connected, directly disposed, or directly coupled to another component , Can also refer to a component It is indirectly connected, indirectly arranged, or indirectly coupled to another element, that is, there is another element between the element and another element. When it is clearly stated that a certain element is "directly connected", "directly arranged" or "directly coupled" to another element, it means that there is no other element between the element and another element. The terms first, second, third, etc. are only used to describe different elements or components, and have no limitation on the elements/components themselves. Therefore, the first element/component can also be referred to as the second element/component. And the combination of components/components/mechanisms/modules in this article is not a combination of general well-known, conventional or conventional in this field. Whether the component/component/mechanism/module itself is conventional or not can not be used to determine whether the combination relationship is It can be easily completed by ordinary knowledgeable persons in the technical field.

Please refer to FIG. 1, FIG. 2, FIG. 3, FIG. 4, and FIG. 5. In which, FIG. 1 is a perspective view of a fastening device 100 according to a first embodiment of the present invention, and FIG. 2 Shows an exploded schematic view of the fastening device 100 in Fig. 1, Fig. 3 shows another exploded schematic view of the fastening device 100 in Fig. 1, and Fig. 4 shows a cross-section of the fastening device 100 in Fig. 1 Schematic. The fastening device 100 includes a housing unit 200 and a wire reel 300.

The housing unit 200 includes a side wall 220, an upper opening 240, and a lower opening 250. The side wall 220 surrounds an accommodating space 230. The upper opening 240 communicates with the accommodating space 230. The lower opening 250 is opposite to the upper opening 240 and communicates with the accommodating space 230. , And the wire reel 300 is located in the accommodating space 230. Wherein, the wire reel 300 is restricted by the side wall 220, and the side wall 220 prevents the wire reel 300 from separating from the accommodating space 230 from the upper opening 240.

Thereby, the wire reel 300 can be allowed to be inserted into the housing unit 200 from bottom to top, and the wire reel 300 can be prevented from being separated from the housing unit 200 from the upper opening 240. The structural details of the fastening device 100 will be described in more detail later.

The side wall 220 may include a plurality of protruding teeth 221 that protrude toward the accommodating space 230, and the lower edge 2211 of the protruding teeth 221 prevents the wire reel 300 from being separated from the accommodating space 230 from the upper opening 240. In detail, the side wall 220 includes an inner peripheral surface (not labeled), the diameter of the inner peripheral surface is the same, and the convex teeth 221 are radially projected from the inner peripheral surface. Therefore, the virtual line formed by the tooth tips of the convex teeth 221 The diameter of the circle will be smaller than the diameter of the inner peripheral surface.

The bobbin 300 has a hollow ring shape and can include an upper ring portion 330 and a lower ring portion 340. A winding track (not shown) can be formed between the upper ring portion 330 and the lower ring portion 340, and the winding track can be used for a tie wire ( Not shown) Winding. In terms of structural configuration, the diameter of the upper ring portion 330 can be larger than the diameter of the virtual circle formed by the convex teeth 221, so that the lower edge 2211 of the convex teeth 221 can prevent the wire reel 300 from escaping from the upper opening 240.

The housing unit 200 may further include a two-wire hole 260 and a chassis 210. The two-wire hole 260 is located on the side wall 220 and can be connected to the accommodating space 230. The tether can be released or wound by entering and exiting the accommodating space 230 through the second-wire hole 260 On the winding track, the chassis 210 is detachably assembled on the side wall 220. After the wire reel 300 is inserted into the accommodating space 230 through the lower opening 250, the chassis 210 can be assembled on the side wall 220 to prevent the wire reel 300 from being separated from the housing unit 200.

The fastening device 100 may further include a knob 500 and a detent unit 400. The knob 500 is covered by the housing unit 200. The detent unit 400 is located in the accommodating space 230 and above the wire reel 300. The detent unit 400 can be coupled to The knob 500 may also include a first driving part 440. Wherein, the wire reel 300 includes a second driving part 310 corresponding to the first driving part 440. The knob 500 drives the detent unit 400 to switch between a first position and a second position along an axial direction I1. When the knob 500 is in the first position In position, the first driving part 440 is coupled to the second driving part 310, and the detent unit 400 corresponds to the convex tooth 221 and is engaged with at least one convex tooth 221 to prevent the wire reel 300 from rotating in a first direction R1, and turn the knob 500 toward Rotating in a second direction R2 opposite to the first direction R1, the detent unit 400 is separated from the at least one protruding tooth 221 without preventing the wire reel 300 from rotating in the second direction R2; when the knob 500 is in the second position, the detent unit 400 does not prevent the wire reel 300 from rotating in the first direction R1.

The detent unit 400 may include a main body 410, three joint arms 420, and three spine arms 430. The three joint arms 420 are arranged on the main body 410 at intervals, and the three spine arms 430 are also arranged on the main body 410 at intervals. The coupling arm 420 is away from the knob 500. Each ratchet arm 430 has a flexible arc arm structure protruding in the first direction R1, and each coupling arm 420 has a flexible arc arm structure protruding in the second direction R2. The main body 410 of the detent unit 400 may include a notch (not labeled) located below, and the first driving portion 440 has a tooth structure and is disposed in the notch. The second driving portion 310 of the wire reel 300 can be provided on the top surface of the upper ring portion 330, which has a meshing structure corresponding to the first driving portion 440, so when the detent unit 400 is located above the wire reel 300, and the knob 500 is located on the first Position, the second driving portion 310 can protrude into the recess to be coupled to the first driving portion 440; conversely, when the knob 500 is switched to the second position, the detent unit 400 is displaced upward along the axial direction I1, so that the first The driving part 440 is separated from the second driving part 310. In other real In the embodiment, when the knob is in the second position, the first driving part and the second driving part may not be separated, and it is not limited to this.

The knob 500 may include three clamping slots 510, which are arranged on an inner wall 520 of the knob 500 at intervals, and the shape of each clamping slot 510 corresponds to the shape of each coupling arm 420 to allow each coupling arm 420 to be clamped. The knob 500 and the detent unit 400 can be coupled and moved simultaneously.

The knob 500 may further include three flanges 530 arranged on the inner wall 520 of the knob 500 at intervals, and the position of the three flanges 530 is adjacent to the lower end edge of the inner wall 520. The side wall 220 may further include an outer ring recess 222. When the knob 500 is covered After the side wall 220, the three flanges 530 are correspondingly limited to the outer ring recess 222 to prevent the knob 500 from being separated from the side wall 220.

In the first embodiment, the fastening device 100 may further include at least one engaging pawl 450 (the number of the engaging pawls 450 in Figure 3 is three and is provided on the main body 410 of the detent unit 400) protruding downwards, The disc 300 includes an engaging portion 320. When the knob 500 is located at the first position, at least one engaging pawl 450 is coupled to the engaging portion 320. When the knob 500 is located at the second position, at least one engaging pawl 450 and the engaging portion 320 separation. The engaging portion 320 may be a groove structure, which is provided on the top surface of the upper ring portion 330 and located below the second driving portion 310. The three engaging pawls 450 surround the recess of the detent unit 400, and the engaging pawls 450 are flexible. It is flexible and will produce radial displacement after being forced. Therefore, when the user pulls up the knob 500 to switch to the second position, the engaging pawl 450 can be displaced radially and separated from the engaging portion 320.

Therefore, as shown in Figure 4, the knob 500 is in the first position, and the first driving portion 440 of the detent unit 400 is engaged with the second driving portion 310 of the wire reel 300, so that when the user turns the knob 500 in the second direction When R2 rotates, the spines The arm 430 is continuously separated from the protruding teeth 221, and the detent unit 400 can drive the spool 300 to tighten the cord; on the contrary, when the user releases the knob 500, the ratchet arm 430 engages with at least one protruding tooth 221, and the spool 300 receives The detent unit 400 is restricted and cannot rotate in the first direction R1, and the fastening effect can be achieved.

As shown in Fig. 5, when the user wants to release the tether, the knob 500 can be pulled up along the axial direction I1. At this time, the detent unit 400 is also moved upward along the axial direction I1 by the linkage to make the first driving portion 440 Separate from the second driving part 310, the rotation of the wire reel 300 is not restricted by the detent unit 400, but the tie wire can be released.

Please refer to Figures 6, 7, 8, and 9, where Figure 6 is an exploded schematic view of a fastening device 100a according to a second embodiment of the present invention, and Figure 7 is Another exploded schematic view of the fastening device 100a in FIG. 6, FIG. 8 is a schematic cross-sectional view of the fastening device 100a in FIG. 6, and FIG. 9 is another schematic cross-sectional view of the fastening device 100a in FIG. 6. The structure of the fastening device 100a is similar to the structure of the fastening device 100 of the first embodiment, but the structure of the detent unit 400a is slightly different. The difference between the fastening device 100a and the fastening device 100 will be described below, but the structure is the same Or the approximation will not be repeated here.

The detent unit 400a includes a main body 410a, two protruding arms 440a, and two limiting protrusions 450a. The two protruding arms 440a are symmetrically disposed on the main body 410a and respectively protrude downward, and each limiting protrusion 450a is located at a distal end of each protruding arm 440a . The wire reel 300a may include a middle through hole 350a for passing through the two convex arms 440a and the two limiting protrusions 450a. When the knob 500a is switched between the first position and the second position, the two convex arms 440a move along the axial direction I1. Relative to the middle through hole 350a, the two limiting protrusions 450a are restricted by the middle through hole 350a.

The middle through hole 350a includes a large-diameter section (not marked) and a small-diameter section (not marked). Since the protruding arm 440a can generate radial displacement after being forced, the detent unit 400a can be used when placed above the bobbin 300a The force inserts the two convex arms 440a downwards, so that the two convex arms 440a are radially displaced through the small diameter section, and then enter the large diameter section for radial restoration. In this way, the detent unit 400a can be confined to the wire reel 300a.

Please refer to FIG. 10, FIG. 11, FIG. 12, and FIG. 13, in which, FIG. 10 is an exploded schematic diagram of a fastening device 100b according to a third embodiment of the present invention, and FIG. 11 is 10 is another exploded schematic view of the fastening device 100b, FIG. 12 is a schematic cross-sectional view of the fastening device 100b of FIG. 10, and FIG. 13 is another schematic cross-sectional view of the fastening device 100b of FIG. 10. The structure of the fastening device 100b is similar to the structure of the fastening device 100a of the second embodiment, but the structure of the knob 500b, the detent unit 400b and the side wall 220b are slightly different. The following will describe the fastening device 100b and the fastening device 100a. The differences, and the same or similar structures will not be repeated here.

In the third embodiment, the two protruding arms 540b are symmetrically arranged on an inner top surface 501b of the knob 500b, and each limiting protrusion 550b is located at a distal end of each protruding arm 540b. The detent unit 400b may include a central hole 460b, two protruding arms 540b and two limiting protrusions 550b pass through the central hole 460b and then enter the middle through hole 350b of the wire reel 300b to limit the knob 500b and the wire reel 300b.

In addition, the side wall 220b may include an inner ring groove 270b, the inner ring groove 270b includes a ring top surface 271b, the wire reel 300b includes a lower ring portion 340b, the lower ring portion 340b is correspondingly received in the inner ring groove 270b, and the ring top The surface 271b prevents the wire reel 300b from leaving the accommodating space (not marked) from the upper opening (not marked) Show). In terms of structural configuration, the diameter from small to large is the upper ring portion (not marked) of the wire reel 300b, the inner peripheral surface of the side wall 220b, the lower ring portion 340b of the wire reel 300b, and the inner ring groove 270b, which are based on the wire reel. 300b can enter the accommodating space from bottom to top, and the lower ring portion 340b is correspondingly received in the inner ring groove 270b to limit the wire reel 300b in the accommodating space. In other embodiments, since the side wall may include an inner ring groove limiting wire reel, the plurality of protruding teeth may face the accommodating space without the lower edge blocking the wire reel, which is not limited thereto.

Please refer to Figure 14, Figure 15, Figure 16, and Figure 17, where Figure 14 is an exploded schematic diagram of a fastening device 100c according to a fourth embodiment of the present invention, and Figure 15 is Another exploded schematic view of the fastening device 100c in FIG. 14, FIG. 16 is a schematic cross-sectional view of the fastening device 100c in FIG. 14, and FIG. 17 is another schematic cross-sectional view of the fastening device 100c in FIG. The structure of the fastening device 100c is similar to the structure of the fastening device 100a of the second embodiment, but the structure of the side wall 220c is slightly different. More specifically, the side wall 220c may include an inner ring groove 270c and an inner ring groove 270c The structure of is the same as the structure of the inner ring groove 270b of the third embodiment, so the details will not be repeated.

Please refer to Figure 18, Figure 19, Figure 20 and Figure 21, where Figure 18 is an exploded schematic view of a fastening device 100d according to a fifth embodiment of the present invention, and Figure 19 is Another exploded schematic view of the fastening device 100d in FIG. 18, FIG. 20 is a schematic cross-sectional view of the fastening device 100d in FIG. 18, and FIG. 21 is another schematic cross-sectional view of the fastening device 100d in FIG. 18. The structure of the fastening device 100d is similar to the structure of the fastening device 100c of the fourth embodiment, except for the detailed structure.

In detail, the side wall 220d may further include an upper ring groove 223d located above the convex teeth 221d. When the knob 500d is in the first position, the ratchet arm 430d of the detent unit 400d corresponds to the convex tooth 221d, and the first driving portion 440d and the second driving portion 310d of the wire reel 300d are coupled with each other; and when the knob 500d is in the second position, The ratchet arm 430d corresponds to the upper ring groove 223d and is completely separated from the convex tooth 221d, but the first driving portion 440d and the second driving portion 310d are still coupled with each other.

Please refer to Figure 22, Figure 23, Figure 24 and Figure 25, where Figure 22 is an exploded schematic view of a fastening device 100e according to a sixth embodiment of the present invention, and Figure 23 is Another exploded schematic view of the fastening device 100e in FIG. 22, FIG. 24 is a schematic cross-sectional view of the fastening device 100e in FIG. 22, and FIG. 25 is another schematic cross-sectional view of the fastening device 100e in FIG. 22. The structure of the fastening device 100e is similar to the structure of the fastening device 100d of the fifth embodiment, but the structure of the detent unit 400e and the knob 500e are slightly different. The difference between the fastening device 100e and the fastening device 100d will be described below. The same or similar structure will not be repeated.

In the sixth embodiment, the fastening device 100e may further include at least one engaging claw 560e (the number of the engaging claws 560e in FIG. 23 is three and is provided on an inner top surface of the knob 500e) protruding downward, and The detent unit 400e does not include an engaging pawl, so when the knob 500e is at the first position, the engaging pawl 560e is coupled to the engaging portion 320e of the wire reel 300e. When the knob 500e is at the second position, the engaging pawl 560e and the card The joint 320e is separated.

Therefore, it can be seen from all the above embodiments that the two convex arms of the fastening device can be symmetrically arranged on a main body of the detent unit or an inner top of the knob. Surface, so as to limit the position of the wire reel and the locking unit or the wire reel and the knob; at least one engaging claw can be arranged on the main body of the locking unit or the inner top surface of the knob for selective coupling with the engaging portion of the wire reel .

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone familiar with the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be subject to the definition of the attached patent application scope.

100: Fastening device

200: housing unit

210: Chassis

220: sidewall

221: Convex Teeth

222: Outer ring concave

230: accommodating space

240: upper opening

260: Wire Hole

300: wire reel

310: The second drive part

320: card joint

330: Sheung Wan

340: Lower Ring

400: Control unit

410: Subject

420: Combination Arm

430: thorny arm

500: knob

R1: first direction

R2: second direction

Claims (8)

A fastening device includes: a housing unit, including: an accommodating space; a side wall surrounding the accommodating space; and a plurality of protruding teeth; a wire reel located in the accommodating space and including a second driving part; A detent unit, located in the accommodating space and above the bobbin, the detent unit includes a first driving part and is directly coupled and limited by the bobbin in an axial direction; and a knob covering the housing unit; Wherein, the knob is pulled up to switch from a first position to a second position along the axial direction. When the knob is in the first position, the first driving part is coupled to the second driving part, and the detent unit It is engaged with at least one of the protruding teeth to prevent the bobbin from rotating in a first direction; when the knob is in the second position, the detent unit is displaced upward, so that the first driving part and the second driving part Separation, or the detent unit rises and separates from the protruding teeth. The fastening device according to claim 1, further comprising at least one engaging pawl, the at least one engaging pawl is provided on a main body of the detent unit, the wire reel includes an engaging portion, when the knob is located on the first At one position, the at least one engaging pawl is coupled to the engaging portion, and when the knob is at the second position, the at least one engaging pawl is separated from the engaging portion. The fastening device according to claim 1, further comprising two protruding arms and two limiting protrusions, the two protruding arms are symmetrically arranged on a main body of the detent unit, and the two protruding arms respectively protrude downward, each The limiting protrusion is located at a distal end of each of the protruding arms, the wire reel further includes a middle through hole for the two protruding arms and the two limiting protrusions to pass through, wherein, when the knob is in the first When the position and the second position are switched, the two convex arms are displaced relative to the middle through hole along the axial direction, and the two limiting protrusions are restricted by the middle through hole. The fastening device according to claim 1, wherein the protruding teeth protrude toward the accommodating space, and the lower edge of the protruding teeth prevents the wire reel from escaping from the accommodating space from the upper opening. The fastening device according to claim 1, wherein the side wall includes an inner ring groove, the inner ring groove includes a ring top surface, the wire reel includes a lower ring portion, and the lower ring portion is correspondingly accommodated in the inner ring groove. A ring groove, and the ring top surface blocks the wire reel from escaping from the accommodating space from the upper opening. A fastening device includes: a housing unit, including: an accommodating space; a side wall surrounding the accommodating space; and a plurality of protruding teeth; a wire reel located in the accommodating space and including a second driving part; The switch unit is located in the accommodating space and above the spool, and the switch The driving unit includes a first driving part; a knob covering the housing unit; and at least one engaging claw located on the detent unit or the knob, so that the detent unit or the knob is directly affected by the detent unit or the knob in an axial direction. Coil coupling limit; wherein the knob is pulled up to switch from a first position to a second position along the axial direction, and when the knob is in the first position, the first driving part is coupled to the second driving part , And the detent unit is engaged with at least one of the protruding teeth to prevent the bobbin from rotating in a first direction; when the knob is in the second position, the detent unit is displaced upward to cause the first driving part Separate from the second driving part, or the detent unit rises and separates from the convex teeth. According to the fastening device according to claim 6, the at least one engaging claw is provided on a main body of the detent unit, the wire reel includes an engaging portion, and when the knob is located at the first position, the at least one engaging claw The engaging pawl is coupled to the engaging portion, and when the knob is located at the second position, the at least one engaging pawl is separated from the engaging portion. According to the fastening device according to claim 6, the at least one engaging claw is provided on an inner top surface of the knob, the wire reel includes an engaging portion, and when the knob is located at the first position, the at least one engaging claw The engaging pawl is coupled to the engaging portion, and when the knob is located at the second position, the at least one engaging pawl is separated from the engaging portion.

Images